Deluxe Two Stage Boost Controller kit for the Mitsubishi Lancer Evolution includes extra high boost spring.

Dual Boost Controllers with 12V solenoid pre-assembled in a black anodized aluminum block. Very simple to hook-up: only 2 hoses to connect, wire up the dash mounted switch and you are ready to go. This kit allows you to dial-in two boost settings for your car and toggle between the two while driving with a flip of the switch. Easy way to limit your boost and save gas, yet with a flip of a switch have max boost power. High quality compact and reliable industrial 12V pneumatic switching solenoid. Includes lighted switch, hose, clamps, and all necessary wire connectors.

How does it work?

 It prevents boost pressure from opening the turbo's wastegate until the preset boost level is reached. Once the turbo spools up to the desired boost, the valve opens, quickly opening the wastegate. Boost pressure is held at this level with accuracy unmatched by even more expensive methods of boost control. 

 Why is it better than a "bleeder"?

A bleeder valve is open all the time. Bleed valves work by fooling the wastegate into only seeing some of the boost pressure. The rest of the pressure is vented off, sometimes completely wasted by blowing out an open hose. The wastegate opens before maximum boost. This can create turbo lag.

Can I install it myself?

Yes, most installations can be finished in less than half an hour with basic hand tools. Adjustment is simple and once set, the valve will hold the desired boost. Easy to follow instructions along with tuning suggestions are included .